Maisie Williams certainly knows how to keep a straight face, especially when she's being asked about Game of Thrones [1] spoilers. During an interview with BBC Radio 1's Breakfast Show, the actress put on her best poker face when her Early Man costar [2] Eddie Redmayne pressed her about spoilers during a fun game of "Heart Rate Monitor." While she managed to keep her composure when Redmayne suggested that her character, Arya Stark, would take the Iron Throne [3], her heart skipped a beat when asked about a fan-favorite relationship [4]. Seeing that we can barely handle all of the crazy theories [5] out there, we can only imagine what it would be like actually knowing the ending [6]. Find out if she slips up in the video above.